idk see why you couldnt drive a g all year around, they have traction control you just gotta be carefull, you do in a suby too. (talking about the 2 door g here)And as for being the same as a 350 yes and no, they have a ton more cargo space, 2 more seats(coupe), and are like 2 feet longer, engine wise yes, they actually have a little less horsepower if you get the autostick, but man they are a blast to drive and that sound is just awesome.
ps they aint slow